Lay-sword



OFHQE.

ELBRIDGE R. HOLMES, QF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMIPTON & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

LAY-SWORD.

Application filed December 26, 1919.

To all whom it may concern.-

Be it known that I, ELBRIDGE R. HoLMns,

a citizen of the United States, residing at lVorcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Lay-Sword, of which the following is a specification.

This invention relates to a support for the lay of a loom, commonly known as a lay sword. It is desirable that a lay sword shall be constructed to provide for vertical adjustment of the lay relatively to the rock shaft but it has heretofore been found very difficult to provide a satisfactory adjustment for this purpose, as the rapid reciprocation and continuous vibra tion of the lay quickly loosened the connec tions and destroyed the adjustment. Fur thermore, the sudden engagement of the dagger or protector of the lay with the loom side or other fixed part when the shuttle failed to box properly placed a very severe strain on the lay sword, and frequently changed the adjustment of the lay.

It is the object of my invention to provide a sword of such construction that it may be conveniently adjusted, and in which the adjustments may be very securely retained. My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of my invention is shown in the drawings in which Figure 1 is a sectional side elevation of a portion of a loom with my improved sword mounted thereon;

F 2 is a front elevation of the parts shown in Fig. 1 and Fig. 3 is a detail sectional elevation taken along the line 3-3 in Fig. 2.

Referring to the drawings, 1 have shown the usual loom side 10, rock shaft 11, lay 12. and crank shaft connector 18.

My improved sword comprises a tubular member 14 threaded at 15 and 16 with screw-threads of opposite hand. The mem ber 14 is commonly formed from a single piece of pipe and the ends of the pipe are Specification of Letters Patent.

Patented May 1 9, 1921.

Serial No. 347,369.

preferably closed by wooden plugs 17 (Fig. 3) which are driven tightly in place.

A casting or bracket 18 is threaded to the upper end of the member 14:, and forms a support for the lay 12. A casting 19 is also threaded to the lower end of the member 14 and is mounted on the rock shaft 11.

With this construction it will be seen that rotation of the member 14 in one direction or the other will draw the castings 18 and 19 together, or will separate them as may be desired. In order to securely retain the adjustment of the parts, the castings 18 and 19 are split on one side as shown at 20 in Fig. 2, and are provided with bolts 21 by which they may be clamped tightly upon the threaded member 14 when the desired adjustment has been secured.

When the parts are thus clamped together, the adjustment is very securely retained, as it is impossible for the parts to vary their longitudinal relation directly. Such variation requires an angular movement of the member 1a, and no forces which act upon the lay or the lay sword tend to produce such a movement. At the same time, I have provided a very convenient vertical adjustment for the lay.

Having thus described my invention it will be evident that changes and modifications can be made therein by those skilled in the art, within the spirit and scope of my invention as set forth in the clahn, and I do not wish to be otherwise limited to the details herein disclosed, but What I claim is In a loom having a lay and a rock-shaft, a lay sword comprising a cylindrical member having threads of opposite hand at its two ends, a casting threaded on the upper end of said cylindrical member and secured to the lay, a second casting threaded to the lower end of said cylindrical member and mounted on the rock-shaft, and means to firmly secure said member against rotation in adjusted position in said castings.

In testimony whereof I have hereunto affixed my signature.

ELBRIDGE R. HOLMES. 

